Look no further than Dakota Stones gift cards
Hackmanite is very reactive under UV light
Petrification occurs when the wood is covered by sedimentary rock
It forms over long periods as mineral-rich water moves through aluminous rock
with inclusions of white to colorless translucent or transparent
Spiderweb Obsidian 24-32x35-45mm AAAA Grade Free Form Cabochon Gem House USA Look no further than DakotaEssentially a volcanic glass, Obsidian ranges in color from opaque black, to green, brown, mahogany, black with rainbow colors, black with snowflake patterns, black with a golden sheen, and translucent black (Apache Tears) Sold individually. These cabochons are all unique and vary in colors and patterns. The image shown has 3 cabochons to give you an idea of the range possibilites of the colors, shapes, sizes, and patterns. The cabochon you received